云打包一直可以最近两天报错了 怎么回事

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:checkReleaseDuplicateClasses'.

  A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
  Duplicate class okhttp3.CacheControl found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.CacheControl$Builder found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.CertificatePinner found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.CertificatePinner$Builder found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.ConnectionPool found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.Cookie found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.Cookie$Builder found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.Dispatcher found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)
  Duplicate class okhttp3.FormBody found in modules jetified-mainlibrary-release-runtime (mainlibrary-release.aar) and jetified-okhttp-3.12 (com.squareup.okhttp3:okhttp:3.12.12)